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Decrypting local user password from sha1 to plaintext

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  • 1.  Decrypting local user password from sha1 to plaintext

    Posted Apr 07, 2020 12:44 PM

    We are looking to move our operator and manager users (local users configured on switch) to be from sha1 to plaintext. Is there a way to decrypt the password so it will show the plaintext version? Currently encrypted-credentials is not configured on the switch.

     

    We have 3810M's and 2930M/F's with code KB/WC.16.08.0001.



  • 2.  RE: Decrypting local user password from sha1 to plaintext

    EMPLOYEE
    Posted Apr 08, 2020 08:35 AM

    There is no (practical) way to decrypt/recover a SHA1 hashed password. The whole purpose of SHA1 is to be irreversible.

     

    What you can do is set a new password, and depending on the situation you might copy the encrypted password in encrypted form from the config to another switch.